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                    什么是中断
            
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                    RISC-V 中的中断
            
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                    摘要
            
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                    动态内存分配
            
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                    物理内存探测
            
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                    实验指导三
            
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                    从虚拟地址到物理地址
            
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                    实验指导四
            
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                    摘要
            
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                    线程和进程
            
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                    线程的创建
            
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                    线程的切换
            
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                    内核栈
            
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                    线程调度
            
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                    小结
            
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                    实验指导五
            
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                    virtio
            
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                    驱动和块设备驱动
            
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                    文件系统
            
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                    小结
            
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                    实验指导六
            
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                    摘要
            
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                    构建用户程序框架
            
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                    打包为磁盘镜像
            
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                    解析 ELF 文件并创建线程
            
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                    条件变量
            
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                    小结
            
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                    实验一：中断
            
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                    实验二：内存分配
            
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                    实验四（上）：线程
            
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                    实验四（下）：线程调度
            
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                    实验六：系统调用
            
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<li>&#x5B9E;&#x9A8C;&#x7528;&#x5230;&#x7684;&#x4EE3;&#x7801;&#x5728; <code>lab-4</code> &#x5206;&#x652F;&#x4E0A;&#xFF0C;&#x4E0E; <code>master</code> &#x7A0D;&#x6709;&#x4FEE;&#x6539;&#x3002;</li>
</ul>
<h3 id="&#x5B9E;&#x9A8C;&#x9898;&#x76EE;">&#x5B9E;&#x9A8C;&#x9898;&#x76EE;</h3>
<ol>
<li><p>&#x539F;&#x7406;&#xFF1A;&#x7EBF;&#x7A0B;&#x5207;&#x6362;&#x4E4B;&#x4E2D;&#xFF0C;&#x9875;&#x8868;&#x662F;&#x4F55;&#x65F6;&#x5207;&#x6362;&#x7684;&#xFF1F;&#x9875;&#x8868;&#x7684;&#x5207;&#x6362;&#x4F1A;&#x4E0D;&#x4F1A;&#x5F71;&#x54CD;&#x7A0B;&#x5E8F; / &#x64CD;&#x4F5C;&#x7CFB;&#x7EDF;&#x7684;&#x8FD0;&#x884C;&#xFF1F;&#x4E3A;&#x4EC0;&#x4E48;&#xFF1F;</p>
<div class="click_reveal"><span> Click to show </span><div><blockquote>
<p>&#x9875;&#x8868;&#x662F;&#x5728; <code>Process::prepare_next_thread()</code> &#x4E2D;&#x8C03;&#x7528; <code>Thread::prepare()</code>&#xFF0C;&#x5176;&#x4E2D;&#x6362;&#x5165;&#x4E86;&#x65B0;&#x7EBF;&#x7A0B;&#x7684;&#x9875;&#x8868;&#x3002;</p>
<p>&#x5B83;&#x4E0D;&#x4F1A;&#x5F71;&#x54CD;&#x6267;&#x884C;&#xFF0C;&#x56E0;&#x4E3A;&#x5728;&#x4E2D;&#x65AD;&#x671F;&#x95F4;&#x662F;&#x64CD;&#x4F5C;&#x7CFB;&#x7EDF;&#x6B63;&#x5728;&#x6267;&#x884C;&#xFF0C;&#x800C;&#x64CD;&#x4F5C;&#x7CFB;&#x7EDF;&#x6240;&#x7528;&#x5230;&#x7684;&#x5185;&#x6838;&#x7EBF;&#x6027;&#x6620;&#x5C04;&#x662F;&#x5B58;&#x5728;&#x4E8E;&#x6BCF;&#x4E2A;&#x9875;&#x8868;&#x4E2D;&#x7684;&#x3002;</p>
</blockquote>
</div></div>

<p><br></p>
</li>
<li><p>&#x8BBE;&#x8BA1;&#xFF1A;&#x5982;&#x679C;&#x4E0D;&#x4F7F;&#x7528; <code>sscratch</code> &#x63D0;&#x4F9B;&#x5185;&#x6838;&#x6808;&#xFF0C;&#x800C;&#x662F;&#x50CF;&#x539F;&#x6765;&#x4E00;&#x6837;&#xFF0C;&#x9047;&#x5230;&#x4E2D;&#x65AD;&#x5C31;&#x76F4;&#x63A5;&#x5C06;&#x4E0A;&#x4E0B;&#x6587;&#x538B;&#x6808;&#xFF0C;&#x8BF7;&#x4E3E;&#x51FA;&#xFF08;&#x601D;&#x8DEF;&#x5373;&#x53EF;&#xFF0C;&#x65E0;&#x9700;&#x4EE3;&#x7801;&#xFF09;&#xFF1A;</p>
<ul>
<li>&#x4E00;&#x79CD;&#x60C5;&#x51B5;&#x4E0D;&#x4F1A;&#x51FA;&#x73B0;&#x95EE;&#x9898;</li>
<li>&#x4E00;&#x79CD;&#x60C5;&#x51B5;&#x5BFC;&#x81F4;&#x5F02;&#x5E38;&#x65E0;&#x6CD5;&#x5904;&#x7406;&#xFF08;&#x6307;&#x65E0;&#x6CD5;&#x8FDB;&#x5165; <code>handle_interrupt</code>&#xFF09;</li>
<li>&#x4E00;&#x79CD;&#x60C5;&#x51B5;&#x5BFC;&#x81F4;&#x4EA7;&#x751F;&#x5D4C;&#x5957;&#x5F02;&#x5E38;&#xFF08;&#x6307;&#x7B2C;&#x4E8C;&#x4E2A;&#x5F02;&#x5E38;&#x80FD;&#x591F;&#x8FDB;&#x884C;&#x5230;&#x8C03;&#x7528; <code>handle_interrupt</code>&#xFF0C;&#x4E0D;&#x8003;&#x8651;&#x540E;&#x7EED;&#x6267;&#x884C;&#x60C5;&#x51B5;&#xFF09;</li>
<li>&#x4E00;&#x79CD;&#x60C5;&#x51B5;&#x5BFC;&#x81F4;&#x4E00;&#x4E2A;&#x7528;&#x6237;&#x8FDB;&#x7A0B;&#xFF08;&#x5148;&#x4E0D;&#x8003;&#x8651;&#x662F;&#x600E;&#x4E48;&#x6765;&#x7684;&#xFF09;&#x53EF;&#x4EE5;&#x5C06;&#x81EA;&#x5DF1;&#x53D8;&#x4E3A;&#x5185;&#x6838;&#x8FDB;&#x7A0B;&#xFF0C;&#x6216;&#x4EE5;&#x5185;&#x6838;&#x6001;&#x6267;&#x884C;&#x81EA;&#x5DF1;&#x7684;&#x4EE3;&#x7801;</li>
</ul>
<div class="click_reveal"><span> Click to show </span><div><blockquote>
<ul>
<li>&#x53EA;&#x8FD0;&#x884C;&#x4E00;&#x4E2A;&#x975E;&#x5E38;&#x5584;&#x610F;&#x7684;&#x7EBF;&#x7A0B;&#xFF0C;&#x6BD4;&#x5982; <code>loop {}</code></li>
<li>&#x7EBF;&#x7A0B;&#x628A;&#x81EA;&#x5DF1;&#x7684; <code>sp</code> &#x641E;&#x4E22;&#x4E86;&#xFF0C;&#x6BD4;&#x5982; <code>mv sp, x0</code>&#x3002;&#x6B64;&#x65F6;&#x65E0;&#x6CD5;&#x4FDD;&#x5B58;&#x5BC4;&#x5B58;&#x5668;&#xFF0C;&#x4E5F;&#x6CA1;&#x6709;&#x80FD;&#x591F;&#x652F;&#x6301;&#x64CD;&#x4F5C;&#x7CFB;&#x7EDF;&#x6B63;&#x5E38;&#x8FD0;&#x884C;&#x7684;&#x6808;</li>
<li>&#x8FD0;&#x884C;&#x4E24;&#x4E2A;&#x7EBF;&#x7A0B;&#x3002;&#x5728;&#x4E24;&#x4E2A;&#x7EBF;&#x7A0B;&#x5207;&#x6362;&#x7684;&#x65F6;&#x5019;&#xFF0C;&#x4F1A;&#x9700;&#x8981;&#x5207;&#x6362;&#x9875;&#x8868;&#x3002;&#x4F46;&#x662F;&#x6B64;&#x65F6;&#x64CD;&#x4F5C;&#x7CFB;&#x7EDF;&#x8FD0;&#x884C;&#x5728;&#x524D;&#x4E00;&#x4E2A;&#x7EBF;&#x7A0B;&#x7684;&#x6808;&#x4E0A;&#xFF0C;&#x4E00;&#x65E6;&#x5207;&#x6362;&#xFF0C;&#x518D;&#x8BBF;&#x95EE;&#x6808;&#x5C31;&#x4F1A;&#x5BFC;&#x81F4;&#x7F3A;&#x9875;&#xFF0C;&#x56E0;&#x4E3A;&#x6BCF;&#x4E2A;&#x7EBF;&#x7A0B;&#x7684;&#x6808;&#x53EA;&#x5728;&#x81EA;&#x5DF1;&#x7684;&#x9875;&#x8868;&#x4E2D;</li>
<li>&#x7528;&#x6237;&#x8FDB;&#x7A0B;&#x5DE7;&#x5999;&#x5730;&#x8BBE;&#x8BA1; <code>sp</code>&#xFF0C;&#x4F7F;&#x5F97;&#x5B83;&#x6070;&#x597D;&#x843D;&#x5728;&#x5185;&#x6838;&#x7684;&#x67D0;&#x4E9B;&#x53D8;&#x91CF;&#x9644;&#x8FD1;&#xFF0C;&#x4E8E;&#x662F;&#x5728;&#x4FDD;&#x5B58;&#x5BC4;&#x5B58;&#x5668;&#x65F6;&#x5C31;&#x4FEE;&#x6539;&#x4E86;&#x53D8;&#x91CF;&#x7684;&#x503C;&#x3002;&#x8FD9;&#x76F8;&#x5F53;&#x4E8E;&#x4EFB;&#x610F;&#x4FEE;&#x6539;&#x64CD;&#x4F5C;&#x7CFB;&#x7EDF;&#x7684;&#x63A7;&#x5236;&#x4FE1;&#x606F;</li>
</ul>
</blockquote>
</div></div>

<p><br></p>
</li>
<li><p>&#x5B9E;&#x9A8C;&#xFF1A;&#x5F53;&#x952E;&#x76D8;&#x6309;&#x4E0B; Ctrl + C &#x65F6;&#xFF0C;&#x64CD;&#x4F5C;&#x7CFB;&#x7EDF;&#x5E94;&#x8BE5;&#x80FD;&#x591F;&#x6355;&#x6349;&#x5230;&#x4E2D;&#x65AD;&#x3002;&#x5B9E;&#x73B0;&#x64CD;&#x4F5C;&#x7CFB;&#x7EDF;&#x6355;&#x83B7;&#x8BE5;&#x4FE1;&#x53F7;&#x5E76;&#x7ED3;&#x675F;&#x5F53;&#x524D;&#x8FD0;&#x884C;&#x7684;&#x7EBF;&#x7A0B;&#xFF08;&#x4F60;&#x53EF;&#x80FD;&#x9700;&#x8981;&#x9605;&#x8BFB;&#x4E00;&#x70B9;&#x5728;&#x5B9E;&#x9A8C;&#x6307;&#x5BFC;&#x4E2D;&#x6CA1;&#x6709;&#x63D0;&#x5230;&#x7684;&#x4EE3;&#x7801;&#xFF09;</p>
<p><br></p>
</li>
<li><p>&#x5B9E;&#x9A8C;&#xFF1A;&#x5B9E;&#x73B0;&#x8FDB;&#x7A0B;&#x7684; <code>fork()</code>&#x3002;&#x76EE;&#x524D;&#x7684;&#x5185;&#x6838;&#x7EBF;&#x7A0B;&#x4E0D;&#x80FD;&#x8FDB;&#x884C;&#x7CFB;&#x7EDF;&#x8C03;&#x7528;&#xFF0C;&#x6240;&#x4EE5;&#x6211;&#x4EEC;&#x5148;&#x7B80;&#x5316;&#x5730;&#x5B9E;&#x73B0;&#x4E3A;&#x201C;&#x6309; F &#x8FDB;&#x884C; fork&#x201D;&#x3002;fork &#x540E;&#x5E94;&#x5F53;&#x4E3A;&#x76EE;&#x524D;&#x7684;&#x8FDB;&#x7A0B;&#x590D;&#x5236;&#x4E00;&#x4EFD;&#x51E0;&#x4E4E;&#x4E00;&#x6837;&#x7684;&#x62F7;&#x8D1D;&#x3002;</p>
<blockquote>
<p>&#x65E7;&#x9898;&#x76EE;&#xFF1A;&#x8FD9;&#x4E2A;&#x9898;&#x76EE;&#x6709;&#x4E00;&#x4E9B;&#x95EE;&#x9898;&#xFF0C;&#x4F1A;&#x5BFC;&#x81F4;&#x7EBF;&#x7A0B;&#x4E2D;&#x5BF9;&#x6808;&#x4E0A;&#x7684;&#x6307;&#x9488;&#x5931;&#x6548;&#x3002;&#x5982;&#x679C;&#x5DF2;&#x7ECF;&#x5B8C;&#x6210;&#x4E86; <code>clone()</code> &#x5B9E;&#x9A8C;&#xFF0C;&#x63A8;&#x8350;&#x4F46;&#x4E0D;&#x5FC5;&#x987B;&#x91CD;&#x65B0;&#x505A; <code>fork()</code>&#x3002;</p>
<p>&#x5B9E;&#x73B0;&#x7EBF;&#x7A0B;&#x7684; <code>clone()</code>&#x3002;&#x76EE;&#x524D;&#x7684;&#x5185;&#x6838;&#x7EBF;&#x7A0B;&#x4E0D;&#x80FD;&#x8FDB;&#x884C;&#x7CFB;&#x7EDF;&#x8C03;&#x7528;&#xFF0C;&#x6240;&#x4EE5;&#x6211;&#x4EEC;&#x5148;&#x7B80;&#x5316;&#x5730;&#x5B9E;&#x73B0;&#x4E3A;&#x201C;&#x6309; C &#x8FDB;&#x884C; clone&#x201D;&#x3002;clone &#x540E;&#x5E94;&#x5F53;&#x4E3A;&#x76EE;&#x524D;&#x7684;&#x7EBF;&#x7A0B;&#x590D;&#x5236;&#x4E00;&#x4EFD;&#x51E0;&#x4E4E;&#x4E00;&#x6837;&#x7684;&#x62F7;&#x8D1D;&#xFF0C;&#x65B0;&#x7EBF;&#x7A0B;&#x4E0E;&#x65E7;&#x7EBF;&#x7A0B;&#x540C;&#x5C5E;&#x4E00;&#x4E2A;&#x8FDB;&#x7A0B;&#xFF0C;&#x516C;&#x7528;&#x9875;&#x8868;&#x548C;&#x5927;&#x90E8;&#x5206;&#x5185;&#x5B58;&#x7A7A;&#x95F4;&#xFF0C;&#x800C;&#x65B0;&#x7EBF;&#x7A0B;&#x7684;&#x6808;&#x662F;&#x4E00;&#x4EFD;&#x62F7;&#x8D1D;&#x3002;</p>
</blockquote>
</li>
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